Hi, New HomePod user here (from Europe). I noticed thanks to the compulsory Massive Attack's Angel bass test that my HomePod had a noticeable distortion when the heavy, low frequency beat hits. This is most noticeable from 6:00 to the end, where the beat can be easily isolated, when putting my ears 20cm away from the top. Every time the beat hits, there is a VRRR VRRR vibration happening. I've switched support and location to no avail. Changing source (either Apple music, or Airplay) changes nothing. I've tried to play simple tones via Airplay to better understand why there is such distortion and I believe that it's excited by frequencies around 30-60hz, but I'm not sure, as it wasn't quite as noticeable as with the beat on the aforementioned track. Given that the distortion sound felt very mechanical, physical, as if a piece is rattling inside, just like one of my PSI A17m monitor sounded before its woofer was replaced, I thought that my HomePod wasn't properly built, so I had it exchanged. Unfortunately, the second unit has the same problem. S/N are DLXWJ255HQK8 and DLXWK53GHQK8. Have you shared this experience ? Could you help me understand what's going on ? Thanks in advance for your help. Best regards.